SHAMROCK - AIRPORT, TEXAS

Average Temperature

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		15		2.7		5		9.4		14.9		19.6		24.5		27.3		26.4		22		15.7		8.9		3.7

Average High Temperature

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		22.4		10.1		12.6		17.3		22.8		26.9		31.6		34.6		33.6		29.2		23.4		16.3		10.9

Average Low Temperature

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		7.6		-4.7		-2.6		1.4		7.1		12.2		17.4		20.1		19.3		14.8		8.1		1.6		-3.5

Highest Recorded Temperature

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		45		29.4		32.2		36.1		37.8		41.1		45		42.8		42.2		40.6		38.9		31.7		27.2

Lowest Recorded Temperature

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-25		-25		-20.6		-17.2		-6.1		-0.6		6.1		11.7		9.4		-1.1		-8.9		-12.8		-22.2

Average Number of Days Above 90F/32C

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		79.7		---		---		0.3		1.4		5.4		14.8		24.5		21.9		9.7		1.7		---		---

Average Number of Days Below 32F/0C

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		98.3		26.2		20.1		11.9		2.1		---		---		---		---		0.1		1.5		11.9		24.6

Average Number of Days Below 0F/-17C

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		0.9		0.4		0.2		---		---		---		---		---		---		---		---		---		0.2

Average Precipitation

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		599		16		21		43		54		90		90		55		65		69		49		30		19

Average Number of Days With Precipitation

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		60		3		3		5		5		8		7		5		6		6		5		4		3

Most Reported Precipitation in a Month

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		283		56		62		171		265		261		283		183		150		183		186		150		108

Most Precipitation Reported in a Day

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		209.3		34.5		33.5		63.5		76.7		143.5		209.3		85.6		70.1		125		82.8		58.4		48.3

Avg. No. of Days w/Precip. Above 0.2in/5mm

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		40		2		2		3		4		5		5		3		5		4		3		2		2

Avg. # of Days w/Precip. Above 0.4in/10mm

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		15		---		---		1		1		2		2		2		2		2		1		1		1

Avg. No. of Days w/Precip. Above 1in/25mm

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		7		---		---		---		1		1		1		1		1		1		1		---		---

Average Snowfall

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		21.6		6.1		5.8		3		0.2		---		---		---		---		---		---		2		4.3

Most Snow Reported in a Month

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		41.9		34.3		32.5		25.4		8.9		---		---		---		---		---		---		32.8		41.9

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2236.7		505.6		377.2		285		135.6		36.7		5		---		0.6		15.6		102.8		303.9		468.9

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		909.4		---		---		---		15.6		65.6		180.6		271.7		244.4		118.3		13.3		---		---

Growing Degree Days

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2465.7		---		---		---		148.3		297.9		435		537.3		509.8		360		177.4		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.6		10.6		11.4		12.4		13.6		14.5		15		14.7		13.9		12.8		11.7		10.8		10.3

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.2		9.9		12.4		16.9		20.9		22.4		24.3		25.5		21.9		18.4		14.3		10.7		8.9

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.5		3.1		4.1		5.4		6.6		7.9		8.1		7.3		6.9		5.7		4.3		3.3		2.8

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.9		15.3		16.2		19.6		21.2		20.4		21.2		22.6		21.2		20.1		18.6		15.7		14.3

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		20.7		17		17.3		20.4		22.7		21.8		24.1		27.2		23.1		21.3		19.7		17.4		15.7

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.2		9.9		12.4		16.9		20.9		22.4		24.3		25.5		21.9		18.4		14.3		10.7		8.9

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.1		3.5		4.6		6		7.4		8.6		9.1		8.1		7.6		6.5		5.1		3.8		3.2

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		22.6		20.8		21.6		23.7		24.1		23.6		24.1		24.3		24.2		23.8		22.8		20.9		17.5

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		27.5		25.6		26.5		27.5		28.4		28.8		31.4		31.6		29.7		28		26.4		25.6		20.8

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.3		8.2		9.7		14		18.1		19.2		19.6		22.9		19.8		15.3		10.1		7.8		6.7

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		4.5		2.1		3		4.3		5.7		6.8		6.8		6.4		5.7		4.6		3.5		2.4		2.4

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15		11.8		11.9		15.7		18.1		17.6		17.4		20.4		19		16.3		11.9		10.4		9.5

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.1		11.6		10.5		14.3		17.1		16		15.7		22.1		18.9		14.8		9.9		9.5		9